Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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Hi i have a pincushion problem with my samsund( half circle black on left and right of screen, looks like bowed in) any simple solution?

Wondering if there was simple fix?

Posted by gavin mckee on

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Eduard P

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SOURCE: DLP TV: Left half normal, vertical 6" band center is gray, right half almost black. What's wrong?

No. The optical engine is OK. You need an adjustment in the light tunel. Call a tech to do it.

Posted on Dec 10, 2007

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Samsung TSL2793HF - Slight Right Side Pincushion and Horz Line Bottom to Top Until the TV Warms up
Yes, this is rare but I have seen it before--not fixable if it is what I think it is----It is what is called a Dome effect---the shadow mask in the picture tube is actually contracting and or expanding depending on temperature---

Directly behind the phosphor coating (the stripes that you see on the screen) is a metal screen--the holes or perforations in it line up with the stripes on the phosphor screen.

Some masks either have a material or a defect causing the dome effect----Not likely to be anything else---a Pin amp problem will not usually act the way you describe but a shadow mask inside the picture tube will act exactly that way.

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It is so simple. I struggled with this forever then called customer service. To turn off the hourly chime just press the bottom right (wave/reset) button while in the normal time/tide screen. You do not need to go through all of the modes. Just one button press from the home screen. When you see the target icon disappear you have done it.

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Have a 60 inch Philips HDTV, model 60pp9200. Screen has a butterfly effect, bowed in on the sides. Problem is much worse on the HD input sides, not as bad on the regular A/V inputs. Any suggestions on...
Replace Both of your STK iCs big black ICs example STK392-110 Call Mats for Parts 1-800-628-1118

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I have a 32in element flat screen had for couple of months now tonight there is a black box in the middle of my screen what should i do
I would like to know the same. We purchased ours on 10/25 and on 12/29 a black half moon shape showed up in the lower left hand side of the screen. Now the rightmost side of the screen is almost covered in black circles. There are also varying widths of lines going up and down on the right half of the screen.

We have tried contacting cusomer service and keep getting voicemail.

Nov 05, 2009 | Element Electronics FLX-3211B 32 in. LCD...

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How to install bobbin
In the shuttle area there is a silver round piece- called the shuttle race cover. It has a black ear on the right and a black ear on the left. Push the right ear to the right, and the left ear to the left and the silver ring should come out. Behind the silver ring is the bobbin case stuck in the hook. Remove that, jiggle it, move it, just work the bobbin case out of the hook. Now put the hook back in the machine. In the machine there is a driver that looks like a half moon. Your hook looks like a half moon- make a full circle out of both of them. Re-install the race cover, pushing the left ear to the right and the right ear to the left to secure the race cover, and your problem should be solved.

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In the shuttle area there is a silver round piece- called the shuttle race cover. It has a black ear on the right and a black ear on the left. Push the right ear to the right, and the left ear to the left and the silver ring should come out. Behind the silver ring is the bobbin case stuck in the hook. Remove that, jiggle it, move it, just work the bobbin case out of the hook. Now put the hook back in the machine. In the machine there is a driver that looks like a half moon. Your hook looks like a half moon- make a full circle out of both of them. Re-install the race cover, pushing the left ear to the right and the right ear to the left to secure the race cover, and your problem should be solved.

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Hitachi 50gx30B Pincushion problem
Please let me know in which direction the picture is distorted. Does it bow in from the top and bottom or left and right?

Thanks,
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1 Answer

Distorted Picture and High Pitch Squeal
You may have a convergence problem. Here are some of the most common symptoms and example photos.

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


2c07611.pngSolution


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

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I have a pic problem is it fixable
If the picture is bowing in on the sides, this is called a pincushion problem. Please confirm that your model is KP-53XBR45 and I'll look up the probable defective parts.

Dan

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1 Answer

Bowed picture
you have pincushion problems and may convergence may require a setup/call for service.

Aug 12, 2007 | Philips 43PP9202 43" Rear Projection...

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